Transmission-gear.



J. M. WILDERMAN.

TRANSMISSION GEAR'. APPLIoATIoN FILED AUG. a, 190s.

Patented Aug. 24,1909.

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Josnrn iu. wirnnnnaufor autours, MISSOURI.

TRANSMISSION-GEAR,

Specication of Letters Patent.

To 'all when it may concern: v'Beit known that I', JOSEPH M. MAN, citizen of the United States, residing at St.' Louis, State of Missouri,4 have invented In the' drawingaligure isa top plan of my invention showin@ its'" application to a`A selffpropelled vehicle; v .ig. 2 is a top plan of thewgear mechanism; the lcover or` upper sec'- tion. of the casing being removed; Fig. 3 s anv enlarged horizontal sectionof the gearing; Fig. 4.- is a transverse section on the line 4 4 of Fig. 3; Fig- 5 is as'ection on the line 54-5 of Fig. l; andFi'g. is an inner face view of themotor-shaft-gear showing the transmission' gears in mesh therewith.

The object of my invention is to` construct a transmission gear specially (though not eX- clusively) adapted for Aservice on automobilesior selfropelled vehicles, with a view of regulating t e speed ofthe running gear and consequently the speed of the vehicle, and

with a view"of"`rever`sing'the direction oftravel of the vehicle b a corresponding reversal of the motion o the running gear.

A further-object is to accomplish the 4sev? eral results-therein, in a speedy and economie` manner all as will hereinafter more fully apv pear 'from a detailed description of the inven- `tion which is asl follows:

vehicle bodyhavingfront and rear wheels W, W respectively, the axle ofthe rear wheels being geared to a transverse-running-v gearshaft Sin anyfapprovedmianner as'fully understoodii'lggthe'art. A At the front end of the vehicle is located a motor M, herein only conventionally shown, the shaft l of which terminates at its 'outer end-in a 4bevel-gear Wheel 2 inclosed inacasijng@ which is -prefervably made of two sections bolted together1 the motor-shaft 1' extending longitudinally with the vehicle body-or' at right angles to the running-gear shaft S. Disposed parallel to the shaft S within the casing C is a tubular transmission-shaft 3 (the greater portion of the-length thereof being hollow) in'which is WiLDnR- 4 free to -v reciprocate a plunger or head 'e formed at the inner end of a reciprocating stem` 5, thehead being connected to said stem by a conical. .shoulder .c 4as shown,- the free ende of the head being likewise tapering as shown. The `plunger o'r headis controlled from the terminally slotted forked long'arm of a bell-crank lever-6 pivotedgtov the vehicle body,th/e short 'arm of the bell-crank being coupledto a rod 7 which may be actuated by Patented Aug. 24, 1905i.

any .special-ly devised lsystem 4of links v(not shown) and within easy reach of .the driver or chauffeur.. A- pin a passes through the slot's of the lever to allow for the necessary oscillation lof the lever under the circum- Y The gear-wheel 2 is providedwith an outer toothed section t, and an inner toothed-Seel tion t', there being in mesh with the larger and outer section .the bevel transmission gear wheel 8, and with the smaller section the transmission pinions 9, 9 at points diametrically opposite to one another'. These gears (S, 9, 9 are loose upon the shaft 3, and bear with one face against an abutment disk D,

which is rigidly secured to the shaft.l Adj acent to the opposite faces of the transmission gears (8,- 9, 9') are the plates p which are loose upon the hollow shaft 3, said plates heingv directly/engaged by the ishort arms or 'camsof a series of dogs-or clutcl'i-levers it) pivotally mountedbetween ears or'lugs e e formedon the bands or rings 1,1 secured to the shaft. The free ends of thelong arme of the dogs are provided with adjusting screws '12 which play vthrough peripheral openings' o formed in the walls'of the hollow shaft 3 and enter sufficientlyifnto4 the bore of the shaft .to "be 'en'gaged-hy-- the plunger head 4 and its s Referringfto the drawings, B represents a conical formations c, c.,

To allow the plungerh'ead 4 and its stem 5 A to, revolve with the hollow shaft 3, the VVouter end of the stemis preferably provided with a loose ring 13 between two collars`14,' l4 culo@ Vthe stem, the pins a passing throughthe slots end of the shaft 3 through which the stem 5 passes is closed by a screw plug or ring r.

The operation of -the'invention is as follows: .The hollow shaft 3 is connected to the the several members 8, 9, Q mounted loosely lcise details hereshown.

onV thefhollow shaft 3a The chauffeur by properly manipulatin or rocking the bel crank lever 6 can slice the plunger-head 4 in one direction or the other, in which movements the inner ends of the adjusting screws 12 carried by the dogs 10 are first engaged by the conical ends c, c of the head (depending on -which direction the head 4 is being moved, and on which side of any particular sets of dogs the head ha pensto be), and when the body of the hea( encounters the screws l2,

it swings the long arms ofthe levers or dogsl 1() outwardly, causing the short arms or cams thereof to oscillate inwardly and wedge themselves against the vwearing plates p, which. being loose upon the sbattere lforced against the adjacent member 8, 9, or 9 as the case maybe, forcing such member firmly against its abutment D, and thereby clutching such member to the shaft 3. The particular member 8, 9, or 9 which thus happens to be clutched or locked to 4the shaft 3 will transmit the.- rotation from the member 2 to said shaft 3, the latter in turn communicating. its motion to the running gear as clearly obvious from the drawing. ATo run the vehicle forward, (in which case aV high speed is resorted to) the chaufi1 eur locks the member 8 to the shaft 3 by wedging the dogs identified with said member against the plate y) of said member; for a slow speed, the chauffeur advances the head until. it has released the dogs of the memberl S, and engaged the dogs of the member. 9 for reversing the mo.

tion of the shaft 3, the chauffeur ladvances the head 4 until the'member 9 has been locked to the shaft, whereby a reverse rotation is imparted to the latter, a :fact quite obvious since the member 9 is disposed on the opposite side of they center of the member 2 from that of the member 9. It is apparent of course that the members 2, S, 9, 9 may be friction gears instead of toothedy gears; that the invention may be a plied to other purposes than those r'here i lustrated; that the number of transmission gears 8, 9, 9 ,need

not be limited to three; that the manner of eilecting'the clutchingfof the gears to the shaft 3 need not necessarily follow the pre- By carefully adjusting the screws `12 any degree of friction between the gears and their abutments by lever 6. A

Having described my invention what I 1. In a ltransmission gear, a hollow shaft, a rotatable member loosely mounted thereon, an abutment fixed to the shaft and engaging one face of the member, a ivotedl clutch-dog carried by the outer wal of the shafton the opposite side ofthe rotatable member and oscillating-in a lane parallel to the axis of the shaft, and (,evices within the shaft controlled from a point-beyond the shaft-for actuating the dog.

2'.A In a transmission gear, a hollow shaft, a rotatable member loosely mounted thereon,y an abutment i'Xed to the shaft and'engaging one face ofV the member, a ivoted clutch-dog carried by the outer wal of the shaft on the vopposite side of the rotating member and having a portion on one arm passing into the interior of the hollow shaft through an opening removed a suitable distance from the axis of oscillation of the dog, said dog oscillating in a plane parallel to the axis of the shaft, and a plunger in the hollow shaft for tripping the 4dog by engaging the portion projecting into the shaft through the opening aforesaid.A y

3. In a transmission gear, a hollow shaft, a rotatable member loosely mounted thereon, an abutment fixed to the shaft and engaging one face of the member, a ivoted clutch-dog carried by the outer wal of the shaft -on the opposite side of the rotatable member, and oscillating in a plane parallel'- to theaxis of the shaft and having an adliusting screw on one arm projecting into the interior of the hollow shaft through an opening removed a suitable distance from the axis of oscillation of the dog, and a plunger in the hollow shaft for tripping the dog by engaging the screw projecting through the opening aforesaid.

" In testimony whereof 4I aHiX my signature,

lin presence of two witnesses.

JOSEPH M. WILDERMAN.

Witnesses:

EMIL STAREK, FANNIE E. WEBER. 

